The Round of 12 didn’t start off the way Kyle Busch and Richard Childress Racing were envisioning.

The No. 8’s AutoTrader EchoPark Automotive 400 came to an end on Lap 74, when he lost control in Turns 1 and 2 slid into the wall.

“I have no idea,” Busch told NBC Sports at the infield care center of what happened to cause the spin. “It felt really good when we came off of pit road after that green-flag stop.

“The car had good grip in it. We had those couple of yellows back-to-back and we restarted on the outside. I felt like I had a flat right front (tire) and I was going to come to pit road. I second-guessed it and said ‘I don’t think so, man. It’s just something is wrong, something isn’t right, but it’s not a flat’.